In JetBrains Datalore before 2026.1 session hijacking was possible due to missing secure attribute for cookie settings

published 2026-03-13 7 mo ago modified 2026-06-17 4 mo ago also EUVD-2026-12045

cvss: 6.3; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.1%; EPSS 0.1% chance of exploitation in 30 days, percentile 1%
public exploits: 0; none known

Patch / fix

fixed in 1

JetBrains Datalore 2026.1

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: partial
Assessed: 7 mo ago (2026-03-16)

Exploit prediction

0.11% chance of exploitation in the next 30 days, higher than 1% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	6.3	CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N
NVD	3.1	5.7	CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

Affected products

JetBrains Datalore

Classification

Weakness

CWE-614 Sensitive Cookie in HTTPS Session Without 'Secure' Attribute
CWE-319 Cleartext Transmission of Sensitive Information

References

jetbrains.com /privacy-security/issues-fixed/
vendor-advisory

Sources

CVE List CVE-2026-32745
NVD CVE-2026-32745

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary